Vacuum-head for cotton-picking machines.



W. K. DANA. VACUUM HEAD FOR COTTON PIGKING MACHINES.

APPLICATION FILED NOV. 21, 1912.

LUEZYQQQ Patented July 22, 1913.

Wm e sav s:

VACUUM-HEAD FOR COTTON-PICKING MACHINES.

Specification of Letters Patent. Patented J -l-l yjgfz Application filed November 21, 1912. SerialNo. 732,665.

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The nozzle is provided with an internal rotatable picking tube having teeth in its outer end whereby the cotton fibers are seized and To all whom, it may concern:

Be it known that I, \Voonnnnr K. DANA, of lVestbrook, in the county of Cumberland and State of Maine, have invented certain twisted to remove them from the bell. As 60 ,5 new and useful Improvements in Vacuunr here shown, the picking tube d has at aeh Heads for Cottonl ickingg,- Machines, of end an external ring or collar d and (P, /which the following is a specification. which are adjacent to internal annular 9 My invention relates to that class of cotton shoulders 11' and a in the nozzle proper and picking machines which employ vacuum balls are interposed between the rings and a 1.0 he ds or nozzles with rotating picking tubes the shoulders forming ball bearings on I t by mac-11 the cotton is twisted from the boll which the picking tube (Z is supported and had drawn into the opening of the nozzle. on which it rotates. At the outer end of Hitherto these picking tubes have been to the picking tube (Z which preferably protated either by means of flexible shafts lll8 jects somewhat beyond the end of the nozzle 709 W chanically operated or by vanes or blades proper, are teeth which are adapted to ent fixed to the outside of the picking tube and grace. the cotton fibers. These teeth are operated by the in-rushine air currents. prcfcably on the inner surface and just The former class of devices involved more within the end and as here shown, they or less complicated mechanism for rotating, consist of sharpened pins 7:. set in the pick- '35 the flexible shafts and the latter class inin; tube near the end and inclining slightly volved dividing the iii-coining air into two rear ard or in direction in which the air is parts'with the result that the pressure at the mouth of the picking tube was materially moving. They also incline somewhat from a adlal direction making an acute angle l rcduced. with and in the direction of the line ot'mo- 25 tjlAccording to my invention 1 locate the tion of the edge of the tube so that as the 5 blades of the rotary picking tube on the picking tube revolves they tend to engage linside of the tube so that the single column the cotton fibers but easily release them as of air performs the double function of rothey are drawn inward. Means are pror, hating the tube and drawing, in cotton. vidcd to rotate the picking tube while. the 130 Another feature of my invention is the machine is in operation. As shown the inpeculiar arrangemclit of the picking'teeth tcrior suri'ace of the picking tube is pro- I or lingers which are arranged at the edge of vided with a series of inclined fan blades 1 the mouth of the picking tube as hereinwhich act to rotate the picking tube as the t after particularly set forth. air and cotton pass inward. $0 353 1 illustrate my invention by means of the In operation the suction head is conaccompanying drawing in which is shown nected to the end of a suction hose and apthc preferable form of my invention. proached to the cotton boll. The rotating In the drawing, Figure 1 represents a teeth seize the cotton fibers which are drawn 5 central longitudinal sectionfFig. 2 is an end toward it by suction and by twisting the i View, and Fig. 3 a side elevation showing niass of cotton enable it to be freed readily the action of the nozzle. on the 'cotton. from the boll.

The vacuum nozzle is provided with The vacuum head above described commeans by which the cotton is seized and billing as it docs thc rotationof the picking twisted as the nozzle is approached to the tube with its cotton engaging teeth and 'the 199 boll and whereby the cotton is released from 'lorce of the inrushinsr air, readily frees the the boll. This I prefer to, do. by means of cotton from the boll. an internal rotating pickingdube provided It is to be lllltltllrjl'OOtl that as many of with teeth which seize and twist the cotton these vacuum heads are used as are necesreleasing it easily from the boll. i sary' and that they are connected with a Q lel'erring to l ig s ll i2 and 25 of the drawsuitable exhaust fan. i i u rcprcscnts a racmnn head or nozzle I claim: t hown as cylindrical in form and conl. nozzle for pneumatic cotton picking act-"onto at its inncr end with a suction hose machines including; an outer tube and an in- I). The outer end of the nozzle is formed nor indcpondcntly freely rotatable tube,

55 with a flange tor the purpose of diverting the entering current of air toward the inlet.

through which the ai' and cotton pass, diagonally disposed blades mounted within the inner tube whereby said tube is rotated acute angle with and in the direction of the 10 by the inrushing. air. line of rotary motion. 7 2. A nozzle for pneumatic cotton picking In testimony whereof I have afiixed my machines including a rotary picking tube signature, in presence of two witnesses.

5 through which the air andfjcotton pass said tube havingd'n' t'ei'nal diagonally disimsed WOODBURY DANA bladesitnd a seri'siof picking teeth sur- Witnesses: rounding the mouth of said tube said teeth S. W. BATES,

inclining rea'rwa'rdly and inwardly at an C. B. CREIGHTON. 

